A3965SLB Datasheet PDF - Allegro MicroSystems

DMOS Dual Full-Bridge PWM Motor Driver

Designed for Pulse Width Modulated (PWM) current control of low voltage stepper motors, the A3965S is capable of output currents to ± 500 mA and operating voltages to 20 V.
The A3965 is particularly attractive for low power or battery operated motors where minimal power consumption is desired. A SLEEP mode disables all circuitry and typically draws less than 1µA supply current from motor and logic supply. During operation the fixed frequency ON pulses of each H-bridge are 180 degrees out of phase to minimize the peak demand required of the motor supply allowing savings in size and cost of external power supply components.

FEATURES
■ ±500 mA, 20 V Output Rating
■ 2.85 to 5.5V Logic Supply Operation
■ Sleep Mode for Minimum Power Consumption
■ Fixed Frequency PWM
■ Offset On Pulses to Minimize Peak Supply Transient Currents
■ Internal UVLO and Thermal Shutdown Circuitry
■ Crossover-Current Protection